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台湾品牌原装单节锂电充电IC 充电电流800mA SOT23-5
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is a complete constant-current/constant
voltage linear charger for single cell lithium-ionbatteries. Furthermore the is specifically
designed to work within USB power specifications.No external sense resistor is needed and no
blocking diode is required due to the internal
PMOSFET architecture .Thermal feedback regulates
the charge current to limit the die temperature during
high power operation or high ambient
temperature .The charge voltage is fixed at 4.2V，and
the charge current can be programmed externally with
a single resistor. The automatically
terminates the charge cycle when the charge current
drops to 1/10th the programmed value after the final
float voltage is reached.When the input supply （wall adapter or USB supply）
is removed the automatically enters a low
current state dropping the battery drain current to less
than 2μA.The can be put into shutdown
mode reducing the supply current to 55μA.Other features include charge current monitor，
undervoltage lockout， automatic recharge and a
status.LY3085A
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